Locking device for windows.



Patented Feb. I2, |901. M. E. REID.'

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j 1 e m m datant lill-MRF E. REID, OF BUFFALO, NEW YORK.

llOlCilhlG DEVHCE l-'OH lNDOWS.

SPFCFlCATION forming part of Letters Patent No. 668,019, dated February12, 1901.

Application filed August 16, 1900. Serial No. 27,062. (No model.)

T @ZZ when@ zt wtf/.y concern:

Be it known that l, MARY E. REID, a citi zen of the United States,residing at Buffalo, in the county of Erie and State of New York, haveinvented a certain new and useful Im proved Locking Device for Windows,of which the following is a specification.

My invention relates to an improved sectional window-sash; and theobject of the invention is to provide a simple and convenient ineans forlocking the inner section or frame coi'ltaining the glass to the outersections.

For a full understanding of the merits and advantages of the inventionreference is to be had to the accompanying drawings and the followingdescription.

rlfhe invention is susceptible to various changes in the form,proportion, and minor details of construction without departing from theprinciple or sacrificing any of the advantages thereof, and to a fulldisclosure of the invention an adaptation thereof is shown in theaccompanying drawings, in which- Figure 1 is a perspective view of myimproved sash. Fig. 2 is an enlarged detached side view of the sash-key.Fig. 3 is a fragment of the sash, showing the locking-cam of the sash-keyin its locked position in full lines and in its unlocked position indotted lines. Fig. a is a fragment of the sash, showing the hingedfinger-piece of the sash -key folded down into the depression in thesash. Fig. 5 is a section on line a a, Fig. a. Fig. 6 is a detached viewof the slotted supporting-disks. Fig. 7 is a detached perspective viewof the lock-plate. Fig. 8 is a fragmentary view of the sashkey, showingthe hinged finger-piece in its two positions.

ln referring to the drawings for the details of construction likenumerals designate like parts.

A suitable sash is shown in the drawings for the attachment of thefastener, which is composed of a main section l and side 2, each ofwhich is cut away in parts to provide ribs la and 2, which overlap eachother. The side sections 2 are each provided with one or more shallowdepressions, in which lock-plates 3, formed substantially as shown inFig. 7, are fitted and secured. These lock plates are each composed of ahorizontal and vertical portion and have a large circular opening et inthe Vhorizontal portion, a series of small openings 5, arranged atintervals around the large opening to receive the fastening-screws, andan elongated substantially rectangular opening G in the vertical portionto receive the locking-cam of the sash-key. The main section 1 of thesash shown contains thewindow pane or glass and has one or more open*ings 7 on each side which pass transversely through it. These openingsterminate on the inner side in an rregularshaped depression 8, ofsubstantially the forni shown in Fig.' 3, and on the outer side in acircular enlarge ment 9, the circular wallof which is reinforced by theannular metal ring l0.

The sash-key consists of a stein ll, a locking-cam 12, having an opening13, in which the lower end of the stem is fitted and rigidly secured bythe pin la, and a ngerpiece 15, having a fork 16, between the branchesof which the iiat outer end 17 of the stem is pivoted by the pintle 18.

The portion of the stein 1l adjacent to its outer end is enlarged, andthis enlargement is provided with an annular groove 19.

Two circular supporting-disks 20 are superimposed upon each other andsecured in the bottom of the circular enlargement 9 by fastening-screwsplaced in the openings 21, and each of these disks is provided with aslot 22, sufiioiently wide to permit the disks to slip upon the grooved'portion of the stem and having a semicircular inner termination or wall22, slightly longer than the circular wall of the grooved portion. Thesedisks are so arranged with respect to each other when in superimposedposition that the inner semicircular ends form a substantially circularopening, substantially as shown in Fig. 6, which is slightly larger incircumference than the circular wall of thegroove 19 and closelysurrounds said groove, thus securing the sash-key in place.

The finger-piece 15 is beveled or cut away at its outer cud to leavesufficient space for the insertion of a finger-nail, as shown at 15a inFig. 8.

Four of the lock-plates and four of the sash-keys are preferablyemployed, and they are so arranged with respect to each other that whenthe sections of the sash are in assembled position the lower projectingends of IOO the stems 11 below the cams t in the circular openings 4 inthe platesrthus holding the keys in place While being partially rotatedor turned to force the locking-cam 12 into the elongated opening 6 inthe plate to lock the sections together. y l

As the nger-piece folds down below the surface when not in use, noprojecting portion is presented to catch in the clothing desired to lockthe sash or sash portions together or to separate them, the stern isturned in the direction required to cause the cam to enter into the slot6 or to Withdraw it from 4 said slot.

I claim as my invention-a A windoW-sash lock comprising lock-plates andsash-keys secured to the Window-sections; each of said lock-plateshaving an elongated opening and a circular opening and each sash-keyhaving a projecting stem end seating in the circular opening in one ofthe lockplates and a cam adapted to flt in the elongated opening.

MARY E. REID.

' Witnesses:

L. M. BILLINGS, G. A. NEUBAUER.

